JPWO2019065827A1 - Radial gap type rotating electric machine, method of manufacturing the same, apparatus for manufacturing tooth piece for rotating electric machine, method of manufacturing tooth member for rotating electric machine - Google Patents

Abstract

Provided are a radial gap type rotating electric machine using amorphous metal which can realize high efficiency and is excellent in productivity, a method for manufacturing the same, a device for manufacturing tooth pieces for a rotating electric machine, and a method for manufacturing a tooth member for a rotating electric machine. A radial gap type rotating electric machine according to the present invention is arranged on a rotating shaft, an inner rotor core (31a) rotatable around the rotating shaft, and an outer peripheral side of the inner rotor core. A rotor (102) having a rotatable outer rotor core (31b), and a stator (101) provided between the inner rotor core (31a) and the outer rotor core (31b). Permanent magnets (22, 23) are provided on at least one of the outer peripheral surface of the inner rotor core (31a) and the inner peripheral surface of the outer rotor core (31b). (101) is characterized in that the amorphous metal foil strip has a stator core including teeth made of a laminated body held by mutual friction.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radial gap type rotating electric machine and a method of manufacturing the same, a manufacturing device of a tooth piece for the rotating electric machine, and a method of manufacturing a tooth member for the rotating electric machine, and particularly to a radial gap type rotating electric machine using an amorphous metal for an iron core and a method of manufacturing the same The present invention relates to an apparatus for manufacturing a tooth piece for a rotating electric machine and a method for manufacturing a tooth member for a rotating electric machine.

  Higher efficiency is required for rotating electric machines (motors) used as power sources for industrial machines and for driving automobiles. In order to increase the efficiency of the motor, a design is generally used in which a low-loss material is used or a permanent magnet having a high energy product is used.

  Motor loss mainly consists of copper loss, iron loss, and mechanical loss. When the required output characteristics (rotational speed and torque) are determined, the mechanical loss is uniquely determined. Therefore, a design that reduces iron loss and copper loss Is important. The copper loss is mainly determined by the relationship between the coil resistance and the current, and the cooling is designed so that the coil resistance and the residual magnetic flux density of the magnet are suppressed. Iron loss can be reduced by the soft magnetic material used. In a general motor, an electromagnetic steel sheet is used for an iron core portion, and a motor having a different loss level depending on its thickness and Si content is used.

  Soft magnetic materials include high-performance materials such as iron-based amorphous metals and iron-based nanocrystalline alloys, which have higher magnetic permeability and lower iron loss than electromagnetic steel sheets. There are many problems in efficiently and inexpensively manufacturing a motor, for example, it is as thin as 0.025 mm, has a Vickers hardness of about 900, and is five times or more harder than an electromagnetic steel sheet.

  Patent Document 1 discloses an example in which amorphous metal is applied to a radial gap type rotating electric machine. U.S. Pat. No. 6,086,086 discloses a bulk amorphous metal magnetic component having a polyhedral shape and including a plurality of amorphous metal strip layers for use in a high efficiency electric motor. In Patent Document 1, an amorphous metal strip material is cut into a plurality of cutting strips each having a predetermined length, a bar of the amorphous metal strip material is formed by stacking the cut strips, and after annealing, the stacked bars are formed. Methods have been proposed for impregnating with epoxy resin, curing, and cutting the stacked bars into predetermined lengths to provide a plurality of polyhedral shaped magnetic components having a predetermined three-dimensional shape.

  Patent Document 2 discloses a method for manufacturing an amorphous laminated iron core by punching and laminating an iron core piece from an amorphous thin sheet material. In the method, a required portion of the iron core piece is punched from an amorphous thin sheet material and a connection hole is formed. Is punched out of the die hole, and the die hole is stacked from the lower side to a desired thickness on the movable pedestal.The pedestal is retracted from below the die hole and the laminated core laminated on the pedestal is gripped. A method for manufacturing an amorphous laminated iron core, wherein the method is performed by constraining, and injecting and filling an adhesive coupling agent into a coupling hole of the laminated iron core to connect the same. Patent Literature 2 discloses an example in which a predetermined motor core shape is punched by a progressive die in a manner similar to press punching of a motor core from an electromagnetic steel sheet. In this example, shape processing can be performed by punching, but since the amorphous foil strip is too thin, crimping between plates realized by electromagnetic steel sheets cannot be performed. There has been proposed a method of injecting into a predetermined hole and laminating and fixing.

JP 2013-21919 A JP-A-2003-309952

  The method of applying the amorphous metal to the radial gap type rotating electric machine disclosed in Patent Documents 1 and 2 described above has problems such as an apparatus for performing a special machining process for the production and an excessively long process time.

  Further, in Patent Literature 2, the amorphous metal is pressed and laminated. However, since the thickness of the amorphous metal is 1/10 or less of the electromagnetic steel sheet, the number of times of pressing is required ten times. In addition, since the amorphous metal is five times harder than the electromagnetic steel sheet, the effect on the mold is five times as large. Therefore, compared to the magnetic steel sheet, the influence on the mold is 50 times or more. Usually, the production is performed while re-polishing the mold about every 2 million times, but the number of times until the re-polishing is 1/50 or less. Therefore, the manufacturing cost is greatly increased. In the case of pressing at a speed of 180 SPM (shot per minute) per minute, it takes about 2 million times in about one month. However, when the pressing is performed at the same speed, the production tact is 10 times due to the number of sheets. Thus, re-polishing of the mold requires polishing within one day. In addition, polishing large-diameter dies and punches requires a lot of man-hours, including labor for loading and unloading dies from a press device, so it can be seen that production under these conditions is not realistic.

  As described above, regarding the manufacture of a radial gap type motor using an amorphous metal, a structure that can be manufactured at a practical level, a manufacturing apparatus and a manufacturing method thereof have not been found.

  SUMMARY OF THE INVENTION In view of the above circumstances, the present invention is directed to a radial gap type rotating electric machine using an amorphous metal which can realize high efficiency and is excellent in productivity, a method of manufacturing the same, a device for manufacturing teeth pieces for a rotating electric machine, a tooth for a rotating electric machine An object is to provide a method for manufacturing a member.

  In order to solve the above problems, the present invention is arranged on a rotating shaft, an inner rotor core rotatable around the rotating shaft and an outer peripheral side of the inner rotor core, and rotatable around the rotating shaft. And a stator provided between the inner rotor core and the outer rotor core. The outer peripheral surface and outer periphery of the inner rotor core are provided. A permanent magnet is provided on at least one of the inner peripheral surfaces of the side rotor cores, and the stator has a stator core including teeth made of a laminate in which amorphous metal foil strips are held by mutual friction. A radial gap type rotating electric machine is provided.

  Further, in order to solve the above-mentioned problems, the present invention provides an apparatus for manufacturing a tooth piece for a rotating electrical machine, comprising a cutting station for shearing a material sheet of an amorphous metal foil strip into a trapezoidal shape. The cutting station has a shear blade that can reciprocate at different angles from each other with respect to a direction perpendicular to the material sheet of the amorphous metal foil strip and a width direction of the material sheet of the amorphous metal foil strip, and differs depending on the shear blade. The angled legs are cut to produce trapezoidal shaped amorphous metal foil strips.

  In order to solve the above problems, the present invention provides a shearing blade capable of reciprocating at different angles to a direction perpendicular to the material sheet of the amorphous metal foil strip and a width direction of the material sheet of the amorphous metal foil strip. Cutting the legs at different angles to produce trapezoidal amorphous metal foil strips, laminating trapezoidal amorphous metal foil strips to produce teeth, inserting the teeth into bobbins And a step of inserting and holding a coil member around the coil conductor to produce a tooth member.

  Further, in order to solve the above problem, the present invention is arranged on a rotating shaft, an inner rotor core that is rotatable around the rotating shaft, and an outer peripheral side of the inner rotor core, and is arranged around the rotating shaft. A rotor having a rotatable outer rotor core, a stator provided between the inner rotor core and the outer rotor core, and an outer surface of the inner rotor core. Permanent magnets are provided on at least one of the inner peripheral surface of the outer rotor core and the stator, and the stator includes a stator core including a tooth formed of a laminate in which amorphous metal foil strips are held by mutual friction. A method for manufacturing a radial gap type rotating electric machine, comprising: manufacturing a stator using the above-mentioned teeth member.

  More specific configurations of the present invention are described in the claims.

  Advantageous Effects of Invention According to the present invention, a radial gap type rotating electric machine using amorphous metal which can realize high efficiency and is excellent in productivity, a method for manufacturing the same, a device for manufacturing teeth pieces for a rotating electric machine, manufacturing teeth members for a rotating electric machine A method can be provided.

  Problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

1 is a perspective view showing a first example of a radial gap type rotating electric machine according to the present invention. 1A longitudinal sectional view The perspective view which shows the stator of FIG. 1A. 2A cross-sectional view FIG. 2A is a perspective view showing the stator core of FIG. 2A in more detail; FIG. 3A is an enlarged schematic view of the tooth member of FIG. 3A. The figure which shows the upper surface of the tooth 1 typically A perspective view schematically showing the teeth 1 and a resin bobbin. A perspective view schematically showing the teeth 1 and a resin bobbin. A perspective view showing an example of a rotor constituting a radial gap type rotating electric machine of the present invention. A perspective view showing an example of a rotor constituting a radial gap type rotating electric machine of the present invention. FIG. 5A longitudinal sectional view Top view of a part of the first example of the radial gap type rotating electric machine of the present invention Top view showing a second example of the radial gap type rotating electric machine of the present invention Top view showing a third example of the radial gap type rotating electric machine of the present invention Top view showing a fourth example of the radial gap type rotating electric machine of the present invention. The perspective view which shows typically an example of the apparatus which cuts the material sheet of an amorphous metal Top view of FIG. 10A Top view schematically showing the material sheet of the amorphous metal foil strip Schematic diagram showing the structure of a conventional radial gap type motor (inner rotor type) 12A cross-sectional view Schematic diagram showing the structure of a conventional radial gap type motor (outer rotor type) FIG. 13A cross-sectional view

  Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like.

  Prior to the description of the radial gap type rotary electric machine of the present invention, a configuration of a conventional radial gap type rotary electric machine will be described. FIG. 12A is a schematic diagram showing the structure of a conventional radial gap type motor (inner rotor type), and FIG. 12B is a cross-sectional view of FIG. 12A. As shown in FIGS. 12A and 12B, the radial gap motor 200 has a general cylindrical shape. A stator core (stator core) 11 is disposed at an axial center portion of a housing 10 provided with a radiation fin on an outer portion.

  A stator coil 12 wound around a teeth portion is mounted in a slot portion of the stator core 11, and a rotor provided with a permanent magnet 13 and a rotor core (magnetic core) 14 inside the stator. Are rotatably held via bearings 18. The bearing 18 is held by end brackets 19 provided at both ends in the axial direction of the housing, and holds the rotor in the axial direction and the gravitational direction. A rotation shaft (shaft) 17 is attached to the center of the rotor, and penetrates a hole of the front end bracket 19 to form an output shaft.

  As shown in FIG. 12B, a rotor core 14 is arranged around a shaft 17, and a permanent magnet 13 is arranged on a surface thereof. FIG. 12B illustrates an 8-pole structure, in which N-pole magnets 13 (N) and S-pole magnets 13 (S) are alternately arranged.

  The stator core is made of a soft magnetic material. Generally, an electromagnetic steel plate is used, and is punched out by a press die and laminated. Amorphous metal is a material whose loss is much smaller than that of electrical steel sheets and can contribute to higher motor efficiency.However, since the hardness is extremely high as described above, a slot-type motor core as shown in the figure is stamped out with a press. It is difficult to stack. For this reason, it is difficult to apply an amorphous metal to the rotating electric machine having the structure shown in FIGS. 12A and 12B.

  FIG. 13A is a schematic view showing the structure of a conventional radial gap type motor (outer rotor type), and FIG. 13B is a cross-sectional view of FIG. 13A. As shown in FIGS. 13A and 13B, in the rotating electric machine 300, the stator core 11 is provided outside the housing / bearing holder 10 by press-fitting or shrink fitting. The housing holds two bearings 18 and rotatably holds a shaft coupled to a rotor core. The stator core 11 is provided with a winding 12 so that the stator becomes an electromagnet. The rotor has a permanent magnet 13 disposed inside a cup-shaped core. FIGS. 13A and 13B show an eight-pole structure, in which N-pole magnets 13 (N) and S-pole magnets 13 (S) are alternately arranged.

  The stator core is made of a soft magnetic material. Generally, an electromagnetic steel plate is used, and is punched out by a press die and laminated. Amorphous metal is a material whose loss is much smaller than that of electrical steel sheets and can contribute to higher motor efficiency.However, since the hardness is extremely high as described above, a slot-type motor core as shown in the figure is stamped out with a press. It is difficult to stack. For this reason, it is difficult to apply an amorphous metal to a rotating electric machine having the structure shown in FIGS. 13A and 13B.

[Radial gap type rotating electric machine]
Subsequently, the radial gap type rotating electric machine of the present invention will be described. The radial gap type rotating electric machine according to the present invention has a configuration to which an amorphous metal can be applied. FIG. 1A is a perspective view showing a first example of the radial gap type rotating electric machine of the present invention, and FIG. 1B is a longitudinal sectional view of FIG. 1A. As shown in FIGS. 1A and 1B, the radial gap type rotating electric machine 100 includes a cup-shaped stator 101 having an opening at one end, and a cup-shaped rotor 102 covering the opening of the stator 101. .

  The rotating shaft (shaft) 37 is rotatably held by a bearing 38. The rotor 102 has a configuration capable of rotating around the rotation shaft 37 while having a gap with respect to the stator 101. Hereinafter, the configurations of the stator 101 and the rotor 102 will be described in detail.

  FIG. 2A is a perspective view showing the stator 101 of FIG. 1A, and FIG. 2B is a longitudinal sectional view of FIG. 2A. As shown in FIGS. 2A and 2B, the stator 101 includes a bearing holder 26 that holds the bearing 38 shown in FIG. 1B, an annular stator core 25, and a stator base that holds the stator core 25. 20. As shown in FIG. 2B, the bearing holding portion 26 is fixed to a stator base 20 which is a housing of the stator by a bearing holding plate 27. Stator iron core 25 has teeth 1 formed of a laminate of trapezoidal amorphous metal foil strips formed from amorphous metal foil strips. In addition, the lower end of the stator core 25 is configured to be integrated with the housing of the stator (stator base 20) by resin.

  FIG. 3A is a perspective view showing the stator core 25 of FIG. 2A in more detail, and FIG. 3B is a schematic view of the teeth member 50 of FIG. 3A enlarged. As shown in FIG. 3A, the stator core 25 has a plurality of (48 in FIG. 3A) teeth members 50 arranged in an annular shape and fixed by a resin mold. The stator core 25 is fixed to the stator base 20 shown in FIGS. 2A and 2B by resin molding. Note that the stator base 20 may be integrated with the resin mold.

  As shown in FIG. 3B, the tooth member 50 includes a tooth 1 made of a laminate in which a plurality of trapezoidal amorphous metal foil strips are stacked, a resin bobbin 3 holding the tooth 1, and a resin bobbin ( And a coil conductor 4 wound around a resin bobbin 3. That is, as shown in FIGS. 3A and 3B, the coil conductor 4 is held between the plurality of resin bobbins 3 arranged. In FIG. 3B, the coil conductor 4 has eight concentrated windings, but may have a distributed winding or a large number of fine wires. By providing the projections 301 and the like on the surface of the resin bobbin 3, the positioning of the adjacent tooth members 50 may be performed. With such a configuration, the positional accuracy of each tooth member 50 in the circumferential direction can be increased.

  FIG. 4A is a diagram schematically illustrating the upper surface of the tooth 1. 4B and 4C are perspective views schematically showing the teeth 1 and the bobbin 3 made of resin. 4A to 4C, the tooth 1 has a configuration in which a laminate in which a plurality of amorphous metal foil strips are laminated is inserted into the resin bobbin 3 and is held by friction in the thickness direction of the laminate. . In other words, the use of amorphous metal foil strips and the friction between the lamination surfaces of the metal foil strips generated by laminating the metal foil strips makes it difficult for the metal foil strips to be displaced. Can be retained without using. Therefore, it is configured so that the plurality of amorphous metal foil strips do not fall apart. For example, a laminated body having a thickness of h ≒ 30 mm obtained by laminating 1200 amorphous metal foil strips having a thickness of 0.025 mm in the rotation axis direction can be used as the teeth 1.

  As shown in FIG. 4A, the amorphous metal foil strip constituting the tooth 1 has a pair of bases (long side 1a and short side 1b) parallel to each other and a pair of sides (legs) between the long side and the short side. 1c) has an angle obtained by dividing 360 ° of the circumference of the stator core by the number of slots of the stator core. For example, assuming that the number of slots is 48, θ = 360 ° ７48 = 7.5 °.

  As shown in FIG. 4C, the tip of the amorphous metal foil strip may have a configuration protruding from the resin bobbin. With this configuration, the protruding portion is covered with the resin mold, and the amorphous metal foil strip forming the laminate can be securely fixed.

  There is no particular limitation on the material of the amorphous metal. -B-Cr) and Metglas 2705M (composition: Co-Fe-Ni-Si-B-Mo) are preferably used. “Metglas” described above is a registered trademark of Metglas Incorporated, a group company of Hitachi Metals, Ltd.

  5A and 5B are perspective views showing a rotor 102 constituting the radial gap type rotating electric machine of the present invention, and FIG. 5C is a longitudinal sectional view of FIG. 5A. FIG. 5A is a view of the inside of the rotor core 31 having a cup shape, and FIG. 5B is a view of the outside of the rotor core 31 having a cup shape.

  As shown in FIG. 5A, the rotor core 31 has an inner peripheral rotor core 31a and an outer peripheral rotor core 31b. The inner rotor core 31a and the outer rotor core 31b have a gap between them, and are configured to be rotatable around the rotation shaft 37, respectively. The rotating electric machine having such a configuration is also called “dual gap type”.

  Inside the rotor 102 having a cup shape, a ring-shaped holding member 32 for holding the rotor core 31a on the inner peripheral side is provided. A soft magnetic body 21 and a permanent magnet (rotor magnet) 22 provided on an inner rotor core 31a are mounted on the ring-shaped holding member 32. On the outer side, a soft magnetic body 24 and a permanent magnet (rotor magnet) 23 provided on a rotor core 31b on the outer peripheral side are mounted. Further, the rotating shaft 37 is disposed at the center of the cup-shaped rotor 102. Each member can be fixed by fastening, bonding, welding using screws or the like, or by press-fitting or shrink fitting depending on the part. The soft magnetic members 21 and 24 disposed on the rotor 102 may be a laminated body such as an electromagnetic steel plate, but may be an iron lump such as a shaft because the yoke is a yoke of a DC field source.

  FIG. 6 is a top view showing a first example of the radial gap type rotating electric machine of the present invention. The configuration of FIG. 8 is formed by combining the stator 101 and the rotor 102 described above. The outside of the permanent magnet 22 of the rotor 102 has a configuration in which the rotor 102 can rotate while having a gap G1 with the stator 101. Further, the inside of the permanent magnet 23 of the rotor 102 has a configuration in which the rotor 102 can rotate while having a gap G2 between itself and the stator 101.

  Conventionally, there is a technology for applying amorphous metal to a two-rotor axial gap motor. However, since the two-rotor axial gap motor has a structure in which gaps are opposed in the axial direction, a very large shaft is required when assembling a one-side rotor. A direction suction force is generated. After assembling the second rotor, the suction force is balanced, but there is a case where the suction force remains on one side due to an error in the gap dimension or the like. Also, it is difficult to assemble while managing the gap equally. Further, the diameter of the rotor becomes large, and it becomes difficult to hold the magnet mounted on the rotor against centrifugal force.

  In the radial gap type rotating electric machine of the present invention shown in FIG. 6, since the permanent magnets 22 and 23 are configured as rotors in advance, the inner and outer gaps G1 and G2 of the stator are assembled at the same time during assembly. It is possible to assemble without considering the attraction force, which is a problem in the case of the axial gap type motor described above.

  FIG. 7 is a top view showing a second example of the radial gap type rotating electric machine of the present invention. FIG. 7 shows an inner rotor type structure. That is, the inner rotor type structure is obtained by not providing the permanent magnet on the outer rotor of FIG. The outer rotor core (outer rotor) is made independent of the inner rotor core (inner rotor) to eliminate the gap between the outer rotor and the teeth so that the outer rotor core and stator core are integrated. Thus, an inner rotor motor in which the inner rotor core (the inner rotor) rotates with respect to the integrated member of the outer rotor core and the stator core can be configured.

  FIG. 8 is a top view showing a third example of the radial gap type rotating electric machine according to the present invention. FIG. 8 shows an outer rotor type structure in which no permanent magnet is provided on the inner rotor of FIG. 6, contrary to FIG. 7. The inner rotor core (inner rotor) is made independent of the outer rotor core (outer rotor), eliminating the gap between the inner rotor and the teeth and integrating the inner rotor core and stator core. Accordingly, an outer rotor motor in which the outer rotor core (the outer rotor) rotates with respect to the integrated member of the inner rotor core and the stator core can be configured.

  FIG. 9 is a top view showing a fourth example of the radial gap type rotating electric machine according to the present invention. FIG. 9 shows an IPM (Interior Permanent Magnet Motor) structure. In the example described so far, the permanent magnet is provided on the surface of the rotor. However, an embedded magnet type motor in which a rectangular parallelepiped permanent magnet (embedded magnet 60) is inserted and arranged in the embedded magnet holding member 61 inside the electromagnetic steel plate. It can also be. The embedded magnet 60 may be a single body or may be divided into a plurality. Although the inner rotor type is illustrated here, an outer rotor type embedded magnet type motor can also be configured, and a structure in which the two rotors are embedded magnet type can also be implemented.

[Device and method for manufacturing teeth for rotating electric machine]
Next, an apparatus and a method for efficiently manufacturing a laminate of the above-described trapezoidal amorphous metal foil strip will be described. FIG. 10A is a perspective view schematically showing an example of an apparatus for cutting a strip-shaped amorphous metal material sheet (amorphous material foop), and FIG. 10B is a top view of FIG. 10A. As shown in FIG. 10A, a cutting device 120 includes a feed roller 122 that feeds out a material sheet 121 of an amorphous metal foil strip, a cutting stage 123 that cuts the material sheet 121 of the amorphous metal foil strip, and a material sheet of the amorphous metal foil strip. It has a cutting blade (upper blade 124a and lower blade 124b) for cutting 121 into a trapezoidal shape, an upper plate 125 supporting the upper blade 124a, and a base plate 126 supporting the cutting stage 123.

  The material sheet 121 of the amorphous metal foil strip is supplied to the cutting stage 123 at a constant pitch by a feed roller 122. The material sheet of the amorphous metal foil strip sent to the cutting stage 123 is shear-cut at its legs by the upper blade 124a and the lower blade 124b to form an amorphous metal foil strip, which is sequentially and continuously laminated on the base plate 126. Thus, the laminate 1 is manufactured. According to such a method, since the cutting blade has a simple shape, it can be easily attached to and detached from the mold, and is inexpensive and easy to perform maintenance such as re-grinding. For this reason, the production cost can be suppressed sufficiently and production can be efficiently performed with respect to disadvantages in production due to the hardness and thinness of the amorphous metal.

  However, if a uniform cutting is performed with a set of cutting blades, a parallelogram-shaped amorphous metal foil strip is formed. Therefore, in the manufacturing apparatus and method of the present invention, as shown by a solid line and a dotted line in FIG. 10B, two sets of a pair of cutting blades of an upper blade 124a and a lower blade 124b having different angles (a blade for cutting one leg portion). And a blade for cutting the other leg) are prepared, and the upper and lower cutting blades are used alternately in a synchronized manner. By moving in the direction of arrow A in FIG. 10A (direction perpendicular to the material sheet of the amorphous metal foil strip) and in the direction of arrow B in FIG. 10B (width direction of the material sheet of the amorphous metal foil strip), an angle is formed. Continuous cutting can be performed. Therefore, a trapezoidal amorphous metal foil piece can be continuously formed only by cutting so that the angle formed by the pair of legs becomes θ.

  FIG. 11 is a top view schematically showing the material sheet 121 of the amorphous metal foil strip. According to the above-described manufacturing apparatus, the material sheet 121 of the amorphous metal foil strip is formed into a trapezoidal shape just by cutting the leg portion 1c indicated by the dotted line in FIG. 11 to obtain one amorphous metal foil strip. Indicates that it can be done.

  It is also possible to cut the amorphous foil strip at an angle by moving the cutting stage 123 using a mechanical cam or the like. Further, a sufficient production speed can be expected by a method in which the amorphous metal foil strip is intermittently fed by the feed roller 122 and the upper blade 124a and the lower blade 124b are operated by the electric slide in synchronization with the intermittent feeding operation. The cutting speed can be expected to be about 200 SPM, and by supplying a plurality of stacked amorphous foil strip material sheets 121, production can be performed at a production speed at which a commercial effect can be expected.

  The laminated body 1 laminated on the base plate 126 is managed to have a predetermined axial length (height) by a method such as management of the number of amorphous metal foil strips constituting the laminated body 1 or weight management. After the alignment, the tooth block can be completed by inserting the tooth block into a resin bobbin.

  As described above, according to the present invention, a radial gap-type rotating electric machine using amorphous metal that can achieve high efficiency and is excellent in productivity, a method of manufacturing the same, a device for manufacturing teeth pieces for the rotating electric machine, It has been demonstrated that a method for manufacturing a tooth member for a rotating electric machine can be provided.

  Note that the present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described above. In addition, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of one embodiment can be added to the configuration of another embodiment. Further, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.

  DESCRIPTION OF SYMBOLS 10 ... Housing, 11 ... Stator iron core, 12 ... Stator coil, 13 ... Permanent magnet, 14 ... Rotor iron core, 15 ... Housing | casing, 17, 37 ... Shaft, 18 ... Bearing, 19 ... End bracket, 100 ... Radial Gap type rotating electric machine, 101: stator, 102: rotor, 1: teeth (laminated body of amorphous metal foil strips), 3: resin bobbin, 4: coil conductor, 20: stator base, 21, 24 ... Soft magnetic material, 22, 23 permanent magnet, 25 stator iron core, 26 bearing holding unit, 27 bearing holding plate, 31 rotor core, 31a inner rotor core, 31b outer rotor Iron core, 32: ring-shaped holding member, 37: rotating shaft (shaft), 38: bearing, 50: teeth member, 60: embedded magnet, 61: embedded magnet holding member, 120: cutting device 121, amorphous metal foil strip material sheet, 122, feed roller, 123, cutting stage, 124a, upper blade, 124b, lower blade, 125, upper plate, 126, base plate, 130, amorphous metal foil strip, 301, protrusion .

Claims (11)

A rotation axis,
A rotor having an outer rotor core that is arranged on the outer periphery of the inner rotor core and the inner rotor core that can rotate around the rotation axis and that can rotate around the rotation shaft;
A stator provided between the inner rotor core and the outer rotor core,
A permanent magnet is provided on at least one of the outer peripheral surface of the inner rotor core and the inner peripheral surface of the outer rotor core,
The radial gap type rotating electric machine, wherein the stator has a stator core including teeth made of a laminate in which amorphous metal foil strips are held by mutual friction. The stator core, the teeth made of a laminate in which an amorphous metal foil strip having a trapezoidal shape in a plan view is laminated in the axial direction of the rotation axis, a resin bobbin holding the laminate, Outside the bobbin, having a tooth member having a coil conductor wound along the stacking direction of the stacked body,
2. The radial gap type rotating electric machine according to claim 1, wherein the plurality of teeth members are arranged in an annular shape and are molded with a resin. 3.   The radial gap type rotating electric machine according to claim 2, wherein the coil conductor is held between the adjacent resin bobbins.   4. The radial gap type rotating electric machine according to claim 2, wherein an end of the tooth on the rotation shaft side protrudes from the resin bobbin. 5.   The radial gap type rotating electric machine according to any one of claims 2 to 4, wherein a lower end portion of the stator core is integrated with a housing of the stator by the resin. A permanent magnet is provided on the inner surface of the outer rotor core,
The radial gap type rotating electric machine according to any one of claims 1 to 5, wherein the inner peripheral rotor core and the stator core are integrated. A permanent magnet is provided on the outer peripheral surface of the inner peripheral rotor core,
The radial gap type rotating electric machine according to any one of claims 1 to 5, wherein the outer rotor core and the stator core are integrated.   8. The radial gap type rotating electric machine according to claim 1, wherein the permanent magnet is embedded in the inner rotor core or the outer rotor core. 9. Equipped with a cutting station that shears the material sheet of the amorphous metal foil strip into a trapezoidal shape,
The cutting station has a shearing blade that can reciprocate at different angles to a direction perpendicular to the material sheet of the amorphous metal foil strip and a width direction of the material sheet of the amorphous metal foil strip, An apparatus for manufacturing a tooth piece for a rotating electrical machine, characterized in that legs of different angles are cut by the method to produce a trapezoidal-shaped amorphous metal foil strip. Cut the legs at different angles by a shearing blade that can reciprocate at different angles to the direction perpendicular to the material sheet of the amorphous metal foil strip and to the width direction of the material sheet of the amorphous metal foil strip, to form a trapezoidal shape. A cutting step for producing an amorphous metal foil strip,
A laminating step of laminating the trapezoidal shaped amorphous metal foil strips to produce teeth,
Inserting the teeth into a bobbin and winding a coil conductor to produce the teeth member. A rotation axis,
A rotor having an outer rotor core that is arranged on the outer periphery of the inner rotor core and the inner rotor core that can rotate around the rotation axis and that can rotate around the rotation shaft;
A stator provided between the inner rotor core and the outer rotor core,
A permanent magnet is provided on at least one of the outer peripheral surface of the inner rotor core and the inner peripheral surface of the outer rotor core,
In the method of manufacturing a radial gap type rotating electric machine, the stator has a stator core including teeth formed of a laminate in which amorphous metal foil strips are held by friction with each other,
A method for manufacturing a radial gap type rotating electric machine, wherein the stator is manufactured using the teeth member according to claim 10.

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